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POSITION ESTIMATION OF AERIAL VEHICLE BASED ON A VISION AIDED NAVIGATION SYSTEM
Navigation Pose Estimation Geo-Referencing Vision-Based Matching Fuzzy reasonning
2015/9/28
Automatic pose estimation remains to be one of the challenging problems in photogrammetry and computer vision. When other
systems (e.g. GPS and INS) are inadequate, and real time precise positioning...
Flight Trials of the Wide-Area Augmentation System (WAAS)
Flight Trials Wide-Area Augmentation System WAAS
2015/6/29
The Wide-Area Augmentation System (WAAS) is being rapidly developed by the Federal Aviation Administration for supplemental operational use in 1997. In time, it will be a primary navigation aid for al...
A New Method for Coverage Prediction for the Wide Area Augmentation System (WAAS)
Coverage Prediction Wide Area Augmentation System (WAAS)
2015/6/29
To provide a detailed analysis framework for WAAS accuracy prediction, a new method has been developed which combines GPS geometry simulation with least squares covariance analysis. This approach cons...
A Real-Time Architecture for Kinematic GPS Applied to the Integrity Beacon Landing System
Real-Time Architecture Kinematic GPS Applied Integrity Beacon Landing System
2015/6/29
Recent flight tests of the Integrity Beacon Landing System (IBLS) have demonstrated the feasibility of using GPS for Category III precision landing. To achieve these results, an airborne architecture ...
Flight Test Evaluation of a Prototype Local Area Augmentation System Architecture
Flight Test Prototype Local Area Augmentation System Architecture
2015/6/29
A Local Area Augmentation System (LAAS) architecture alternative has been developed to provide satellite navigation performance compliant with the stringent requirements for aircraft precision approac...
Inertially Aided GPS Based Attitude Heading Reference System (AHRS) for General Aviation Aircraft
GPS Attitude Heading Reference System (AHRS) General Aviation Aircraft
2015/6/29
GPS was used with ultra-short baselines (2-3 carrier wavelengths) in a triple antenna configuration to obtain attitude for General Aviation (GA) aircraft.Through algorithm selection and error source c...
A Low-Cost GPS/Inertial Attitude Heading Reference System (AHRS) for General Aviation Applications
Low-Cost GPS/Inertial Attitude Heading Reference System (AHRS) General Aviation Applications
2015/6/29
An inexpensive Attitude Heading Reference System (AHRS) for General Aviation applications is developed by fusing low cost ($20 - $1000) automotive grade inertial sensors with GPS. The inertial sensor ...
GPS Supplemental Navigation Systems for Use During the Transition to a Sole-Means-GPS National Airspace System
GPS Supplemental Navigation Systems Sole-Means-GPS National Airspace System
2015/6/29
The current Federal Radio Navigation Plan presents a plan that includes phasing out of existing radio-navigation aids as part of the transition to sole-means-GPS navigation in the United States. GPS b...
GIDL:Generalized Interference Detection and Localization System
GIDL Generalized Interference Detection Localization System
2015/6/29
The Local Area Augmentation System (LAAS) and the Wide Area Augmentation System (WAAS) are being devel oped by the U.S. Federal Aviation Administration (FAA) to provide satellite navigation performanc...
Flying a Tunnel-in-the-Sky Display Within the Current Airspace System
Flying Tunnel-in-the-Sky Display Within Current Airspace System
2015/6/29
Enhancing aircrew situational awareness has become recognized as a critical element in reduction of overall aircraft accident rates. Improved display concepts have been investigated for several decade...
A Local-Area GPS Pseudolite-Based Mars Navigation System
Local-Area GPS Pseudolite-Based Mars Navigation System
2015/6/29
Tasks envisioned for future generation Mars rovers sample collection, area survey, resource mining, habitat construction, etc.– will require greatly enhanced navigational capabilities over those posse...
1.5 System Overview,Recent Developments,and Future Outlook for WAAS and LAAS
System Overview Recent Developments Future Outlook WAAS LAAS
2015/6/26
Over the past decade, two separate approaches have been developed to augment the Global Positioning System to meet the accuracy, integrity, continuity, and availability needs of civil aviation users.
There may be situations where positioning is required, but no service is available either due to signal blockage or cost of installing infrastructure.
We compared positioning performance of GPS and DGPS to that of GPS/DGPS integrated with non-interfering UWB transponders. Simulations of a simple test case predict 15% horizontal accuracy improvement ...
An Inexpensive and Robust GPS/INS Attitude System for Automobiles
Inexpensive Robust GPS/INS Attitude System Automobiles
2015/6/26
Many of the sophisticated control systems of modern automobiles require measurements of the vehicle’s attitude. Commercial GPS attitude systems are the method of choice for measuring attitude in many ...